Handler::VNPage: Conditionally disable warnings for smartmatch
Handler::VNPage: Conditionally disable warnings for smartmatch

Only recent perl versions need it, on older versions the 'no warnings'
line would cause an error.

morkt/vndb,erengy/vndb,christian-roggia/vndb,morkt/vndb,morkt/vndb,morkt/vndb,christian-roggia/vndb,christian-roggia/vndb,erengy/vndb,erengy/vndb,morkt/vndb